Electronics Forum: gold bga pads (Page 1 of 158)

using gold on PCB pads

Electronics Forum | Sat Jul 29 07:17:34 EDT 2006 | Ali Uzel

Hi all, I do know a little on PCB manufacturing. I would like to know whether using gold on PCB pads can cause soldering problems, both using automation and by hand. We are using a new device, 484-pin, 0.8mm, BGA and 0402 size capacitors. Or it can

using gold on PCB pads

Electronics Forum | Sat Jul 29 09:07:15 EDT 2006 | davef

The issue is not the gold, but the amount of gold. Gold content over 3 percent raises concerns about reliability of the solder connection.

using gold on PCB pads

Electronics Forum | Sat Jul 29 13:36:57 EDT 2006 | Chunks

Davef is right about the amount, but why are using gold to solder too when other finishes are avaiable?

using gold on PCB pads

Electronics Forum | Mon Jul 31 10:51:11 EDT 2006 | Chunks

OK so you're stuck with gold. Not all that bad unless you're paying for it. Gold is very flat compared to HASL, so you should have no problems printing. This should lead to good placement as well. But after oven you mat have a big contrast betwee

using gold on PCB pads

Electronics Forum | Sun Jul 30 09:10:09 EDT 2006 | systemonchip

Thank you for your help. Using gold is not my decision, it is my boss-I-know-everything's decision unfortunately. take care

Solder on gold LCD pads

Electronics Forum | Sat Oct 06 08:38:17 EDT 2001 | davef

We've talked about this previously on SMTnet, check the archives.

Solder on gold LCD pads

Electronics Forum | Fri Oct 05 18:59:53 EDT 2001 | Dan Steffler

I have had an issue where solder has contaminated gold plated pads (fingers) where it is not acceptable. The pads must remain perfectly coplaniar for a LCD zebra strip to lay accross them. Does anyone know of a way to remove the marriage level of s

Removing extra gold bleeding from pads

Electronics Forum | Wed Jan 09 12:53:55 EST 2013 | scais

Hello, We are having issues to solder components. We investigate the issue and found that the pads were having extra gold on the sides. Is it normal? Can we remove this gold 'bleeding from our PCB?' Thanks

Removing extra gold bleeding from pads

Electronics Forum | Thu Jan 10 11:22:48 EST 2013 | pbarton

Looks to me like under etching of the underlying copper and the gold is just plated to all of the exposed copper surface. Is this characteristic the same on all solderable pads? You will not be able to remove this gold.

Removing extra gold bleeding from pads

Electronics Forum | Tue Jan 15 10:35:08 EST 2013 | boriskilk

We would agree with Pete B about both the under etching as a possible issue and you will not be able to remove this gold. Another possibility is the solder mask (plating resist) hasn't been taken right to the edge of the pad.

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